Tomasz Sowa e13e5eb329 added: flag TTMATH_BIG_ZERO to Big<> class ...

if this flag is set then there is a value zero
added:   Big::ClearInfoBit(unsigned char)
         Big::SetInfoBit(unsigned char)
         Big::IsInfoBit(unsigned char)
         some methods for manipulating the info flags
changed: IsZero() is using TTMATH_BIG_ZERO flag
         now it has O(1) complexity
         previously was O(n)
changed: optimized some methods
         they are using IsZero() for testing at the beginning
         because this method is much faster now
changed: Big::Div(ss2)
         Big::Mod(ss2)
         they return 2 when ss2 is zero
         previously returned 1



git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@190 e52654a7-88a9-db11-a3e9-0013d4bc506e

2009-09-11 04:24:42 +00:00

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